package Leetcode;

public class maxProfit {
    public int maxProfit(int[] prices) {
        int res = 0;
        int[][] dp = new int[prices.length][2];
        dp[0][0] = -prices[0];
        dp[0][1] = 0;
        for (int i = 1; i < prices.length; i++) {
            dp[i][0] = Math.max(dp[i - 1][0], -prices[i]);
            dp[i][1] = Math.max(dp[i - 1][1], dp[i - 1][0] + prices[i]);
        }
        return dp[prices.length - 1][1];
    }
    public int maxProfit2(int[] prices) {
        int res = 0;
        int low = Integer.MAX_VALUE;
        for (int i = 0; i < prices.length; i++) {
            low = Math.min(low, prices[i]);
            res = Math.max(res, prices[i] - low);
        }
        return res;
    }
}
